This tutorial by MoP Co-Founder and award winning astrophotographer Ron Brecher is introducing a new approach for creating synthetic luminances in Pixinsight. Ron will show you how to use your existing HaLRGB data (and the processes that must be applied beforehand) in order to create a synthetic luminance that out-performs low-integration luminance data. This method is particularly useful to allow you to prioritise colour data acquisition and still create a high SNR luminance dataset. This method uses only the processes within Pixinsight although external scripts and plugins can also be used to speed up certain processes.